Rosen Belov was born on March 13, 1975 in Sofia. He graduated from the first experimental class “4xS” in Acting at 22nd high school “G.S.Rakovski”. He graduated from The National Academy for Theatre and Film Arts in 1998 with a degree in Acting for theater in the class of professor Nadezhda Seykova. After his graduation, he worked in the theatres in Gabrovo and Shumen.He joined the ensemble of Sofia Theatre in 2000.Roles: Fedotik in “Three Sisters” from Anton Chekhov, Baronet in “The Libertine” from Eric-Emmanuel Schmitt, Carl in “The Baltimore Waltz” from Paula Vogel, Officer Klein in “Arsenic and Old Laces” from Joseph Kesserling, , Woof in the rock musical “Hair” from James Rado, Gerome Ragni, and Galt MacDermot, Rusi in “Love Boulevards” and Ivan Asen II in “The Horse of Alexander the Great” (both from from Stefan Tsanev), Lucentio in “The Taming of the Shrew” and Benvolio in “Romeo and Juliet” from William Shakespeare, Ivan Senebirsky in “Albena” from Yordan Yovkov, Michel in “Les Parents terribles” from Jean Cocteau, Mack Aston in “They Shoot Horses, Don`t They?” from Horace McCoy, Dimitar The Rooster in "Dangerous adventures with characters with sweet" from Nedyalko Yordanov, Shpekin in "The Government Inspector" from Nikolai Gogol, Lete in “The Ugly” from Marius Mayenburg, and others.
He also had a role in the National Theatre “Ivan Vazov”, Youth theatre „Nikolay Binev”, in the dance performance"Lynch - à desire for intimacy" from Mila Iskrenova. He speaks Russian and English languages. He practices fencing, horseback riding, and swimming.